table {
    width: 80vw;
    margin: 20px auto;
    border-collapse: collapse;
}

th,
td {
    padding: 10px;
    text-align: center;
    color: aliceblue;
}

tr:nth-child(odd) {
    background-color: pink;
}

tr:nth-child(even) {
    background-color: plum;
}

div {
    text-align: center;
}

.modal-update {
    width: 100vw;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
}

.modal-update form {
    width: 400px;
    height: 300px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: rgb(255, 150, 190);
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    padding: 0 20px;
}

.modal-update form input {
    width: 100%;
    height: 30px;
}

.modal-update .tool {
    display: flex;
    justify-content: space-around;
}

.modal-update .tool button {
    width: 40%;
    height: 30px;
}

.book {
    top: 5px;
    left: 10%;
    width: 100%;
    background-color: #fff;
}

.book_query {
    display: flex;
    margin: auto;
    justify-content: center;
}

.query {
    display: inline-block;
    width: 60%;
    height: 30px;
}

.grtbook {
    width: 50%;
}

.book_increase {
    margin-top: 5px;
    width: 80%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    margin-left: 90px;
}

.book_increase input {
    display: inline-block;
    width: 30%;
    height: 30px;
}

.addbook {
    position: absolute;
    top: 0;
    height: 36px;
    margin-left: 5px;
}

#btn {
    margin: 0px 5px 0 5px;
    height: 36px;
}

#btn1 {
    height: 36px;
}

#inp1 {
    margin-left: 15px;
    height: 30px;
}